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将JAXB批注应用于现有数据模型

[英]apply JAXB annotation to an existing data model

原文 2012-05-17 09:30:34 5 2 java/ jaxb

I have the following problem. 我有以下问题。 For webservices I am using an existing data model. 对于Web服务，我正在使用现有的数据模型。 So I need to apply JAXB annotations on the existing source classes. 因此，我需要在现有的源类上应用JAXB批注。 This requires a lot of effort to do manually. 这需要手动进行大量的工作。

Does anyone know a tool that can help automate this process? 有谁知道可以帮助自动化此过程的工具？ For clarity, generating java source code through an xsd is not the goal. 为了清楚起见，通过xsd生成Java源代码不是目标。

2 个解决方案

You can first get all classes in your data model package and then use Javassist to do add an annotation on each of those classes at run-time. 您可以首先在数据模型包中获取所有类，然后在运行时使用Javassist在每个这些类上添加注释。

Check out how to get all classes in a package tutorial 在软件包教程中查看如何获取所有类
Check out this Javassist tutorial about adding annotations at runtime 查看有关在运行时添加注释的Javassist 教程

If you want to avoid this procedure though and just change the source code I think Search/Replace in your data model package would be the way to go. 但是，如果您想避免执行此过程，而只是更改源代码，那么我认为在数据模型包中进行“搜索/替换”将是您的最佳选择。

JAXB (JSR-222) is configuration by exception. JAXB（JSR-222）是例外配置。 This means you only need to annotate the model where the desired representation defers from the default one: 这意味着您只需要注释模型，其中所需的表示形式会偏离默认模型：

http://wiki.eclipse.org/EclipseLink/Examples/MOXy/GettingStarted/TheBasics http://wiki.eclipse.org/EclipseLink/Examples/MOXy/GettingStarted/TheBasics

If you have an XML Schema that you are trying to map your domain model to, then you may find the Dali JAXB tooling in Eclipse helpful. 如果您尝试将域模型映射到XML模式，那么您可能会发现Eclipse中的Dali JAXB工具很有帮助。 I would recommend trying out a pre-released version of Juno. 我建议尝试使用Juno的预发行版本。